Investigations 1 & 2 Quiz & Vocab

In class, a group of students added water to two mystery substances and allowed the water to evaporate. They recorded their observations in their notebooks. Compare one student's observations ot the key that shows the crystal formation of four students. Use the information below to identify which sample is Sample A.

(a)  

Tags

NGSS.MS-PS1-2

In class, a group of students added water to two mystery substances and allowed the water to evaporate. They recorded their observations in their notebooks. Compare one student's observations ot the key that shows the crystal formation of four students. Use the information below to identify which sample is Sample B.

(a)  

Tags

NGSS.MS-PS1-2

What is the difference between the substances represented by the symbols Co and CO?

• They are two different ways to represent the element cobalt
• One is the sybol for an element, and one is a formula for a compound
• Co represents the element cobalt, and CO represents the element copper

Tags

NGSS.MS-PS1-1

Name the elements represented by the chemical formula

• hydrogen and oxygen
• helium and oxygen
• Holmium and oxygen

Tags

NGSS.MS-PS1-1

Name the substance represented by the chemical formula

• nitrogen and calcium
• sodium and chloride
• nitrogen and carbon

Name the substance represented by the chemical formula

• calcium and oxygen
• chlorine and cobalt
• carbon and oxygen

Tags

NGSS.MS-PS1-1

What was Mendeleyev's purpose for reorganizing the periodic table?

• He wanted to fit all the elements on one page instead of in a long line.
• He wanted to put elements with similar characteristics in the same column.
• He wanted to order the elements from the lightest to the heaviest.

A group of students mixed two liquids together. After leaving the mixture alone for 10 minutes, two separate layers formed. They recorded information about each substance in the table below. Consider the properties of the substances before and after they were mixed. Did a chemical reaction occur?

(a)  

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A group of students mixed two liquids together. After leaving the mixture alone for 10 minutes, two separate layers formed. They recorded information about each substance in the table below. Consider the properties of the substances before and after they were mixed.

Is valid support for this being a chemical reaction that Liquid 1 and Layer B have the same boiling point.

• Yes
• No

Tags

NGSS.MS-PS1-2

A group of students mixed two liquids together. After leaving the mixture alone for 10 minutes, two separate layers formed. They recorded information about each substance in the table below. Consider the properties of the substances before and after they were mixed.

Is valid support for this being a chemical reaction that Liquid 1, liquid 2, and layer A are clear; layer B is red

• Yes
• No

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5